KSPGetErrorHistory#
Gets the array used to hold the error history and the number of residuals it contains.
Synopsis#
#include "petscksp.h"
#include "petscmat.h"
PetscErrorCode KSPGetErrorHistory(KSP ksp, const PetscReal *a[], PetscInt *na)
Not Collective
Input Parameter#
ksp - iterative context obtained from
KSPCreate()
Output Parameters#
a - pointer to array to hold history (or
NULL)na - number of used entries in a (or
NULL)
Notes#
This array is borrowed and should not be freed by the caller.
Can only be called after a KSPSetErrorHistory() otherwise a and na are set to zero
Fortran Note#
The Fortran version of this routine has a calling sequence
call KSPGetErrorHistory(KSP ksp, integer na, integer ierr)
note that you have passed a Fortran array into KSPSetErrorHistory() and you need
to access the residual values from this Fortran array you provided. Only the na (number of
residual norms currently held) is set.
See Also#
KSP: Linear System Solvers, KSPSetErrorHistory(), KSPGetResidualHistory(), KSP
Level#
advanced
Location#
src/ksp/ksp/interface/itfunc.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages